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Finding the Fourth Proportional to 389.43, 583.88 and 155.01

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Solution

The fourth proportional to 389.43, 583.88 and 155.01 is: 232.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.43 : 583.88 = 155.01 : x
  2. Step 2: Convert to fraction form
    389.43/583.88 = 155.01/x
  3. Step 3: Cross multiply
    389.43x = 583.88 × 155.01
  4. Step 4: Simplify right side
    389.43x = 90,507.24
  5. Step 5: Solve for x
    x = 90,507.24/389.43
  6. Step 6: Final answer
    x = 232.41

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